Grinding-machine



(Nq Molry 2 sheetssheet 1.

H. P. LUTTON.

GRINDING MACH-INE.

No. 577,440. Patented Feb. 23, 1897.

(N0 Model.) 2 sheetssheet z.

H. P. LTTN.

GRINDING MACHINE. N0.,577,440. A Patented Feb. 23, 1.897.

me mams Pcrzrns co PH To m1 Nigra STATES HENRY P. LU'ITON, OF ST.CHARLES, ILLINOIS.

(IRINDINC-IVIACl-HNE.v

SPECIFICATION forming part of Letters Patent No. 577,440, dated February23, 1897.

Application filed May 8, 1896. Serial No. 590,700. (No model.)

T0 a/ZZ whom t may concern.'

Beit known that I, HENRY P. LU TTON, a citizen of the United States,residing at St. Charles, in the'county of Kane and State of Illinois,have invented certain new and useful Improvements in Grinding-Machines,of which the following is a speciication.

My invention relates to a machine for grinding the bur or gate-piecefrom the interlocking end part of links used in the manufacture of linkbelts or sprocket-chains.

My invention is illustrated in the accompa.

nyin g drawings, wherein I have shown an application of my invention,although I do not pretend to have fully exhibited every application ofit or all modifications which might be made. I have shown, however, afull illustration of such a machine as I have had in practicaloperation.

Figure 1 is a plan view; Fig. 2, a longitudinal section. Fig. 3 is adetail of the link and lug thereon. Fig. 4 is a cross-section throughthe chain-channel. Fig. 5 is a crosssection through the chute.

Like parts are indicated' by the same letters in all the figures.

Ais the body, base, frame, or table on which the parts are mounted. Onthis body or associated therewith in proper relation are the standardsB, which carry the counter-shaft C. On this counter-shaft are mountedthe two pulleys D and E, which pulleys may either be stepped or plain,the stepped-pulley construction being used to varythe speed. Thecounter-shaft is driven in any desired manner. The pulley D is belted tothe pulley D on the shaft D2, and the pulley E is belted to the pulley Eon the shaft E2. The shaft D2 is :mounted in suitable bearings, one onthe table and the other on the carriage G. This shaft D2 also' carries asprocket-wheel D3, which is associated with the shaft in such a mannerthat it is driven by the shaft when the latter rotates. The carriage Ghas at its opposite end a short shaft G', journaled in suitable bearingsin the carriage and provided with a sprocket-wheel G2. G2 is asprocket-chain which travels over the two sprocket-wheels and throughthe guideway on top of the carriage. This chain has the rectangular projections G4 G4 for the purpose hereinafter described. The carriage ismounted, as shown,

on the table or base, but so as to be capable of lateral motion, and itsposition is controlled by means of the screws G5 G6, controlled by theirrespective hand-wheels and adapted when properly operated to move thecarriage bodily laterally on the table. On top of the table is aguideway comprising a groove II, in which the sprocket-chain travels, anoverhanging upper portion J, which keeps the sprocket-chain in position,a side channel K for the end of the link, and a spring-piece K toreceive and hold the links in position as .they are first received bythe chain. L is an inclined chute or way which leads to thesprocket-chain and is adapted to discharge the links to be treatedthereon. Its lower end discharges immediately under the upwardlyturnedend of the spring.

Referring to the shaft E2, it is supported in suitable bearings oncross-pieces in the table or base and carries the grinding-wheel M,which presents its grinding-surface to the side of the carriage..

As previously suggested, I do not mean here to attempt to describe everyform or feature of my device, but only to set it forth in such a mannerthat an intelligent mechanic can make and use it and can also adapt suchother convenient modifications and employ such equivalent devices andconstructions as the particular necessities of the conditions underwhich he labors may require.

The use and operation of my invention are as follows: A quantity oflinks fresh from the casting process having been assembled on the tablein proximity to the chute or being put in any suitable hopper ordelivering-receptacle, the machine is set in operation and the links arefed in proper position by hand or otherwise into the chute. I-Iere theypass down in a regular procession, each one pushing its predecessorforward, and the lowermost ones pass under the spring, whereby they areelastically forced down upon the upward projections, which are carriedby the sprocketchain. These projections in the case shown are shapedrectangular, but of course they would be shaped to properly fit or so asto hold in proper position the links, and their size and shape would bedetermined by the character. of the links. The links successively fallupon these projections and are car- IOO ried forward by them along theguideway. At the same time the grinding-wheel is being rapidly rotated,and so as the links pass by the projecting gate portion is ground off.Each link passes clear across the face of the grinding-wheel, and hencethe surface of the grinding-Wheel is kept smooth and is not worked intogrooves and ridges. The link is held in position against the wheel whileit is being drawn through the guideway. The chain gradually draws thelink through the guideway as it is being ground. The end bar of the linkpresses against the back end of the guideway. The normal distance ofsuch sprocket-chain from the grinding-wheel, to get the best results, isdetermined in each case by experience and is dependent on the charaeterof the links to be treated and the lnetal of which they are composed,and hence the adjusting devices which I have shown. I have not thoughtit necessary to show any elasticity in any of the parts of the carriageor chain to accommodate for the triiiing inequalities in the work to bedone on the successive links of a given class, as the chain in mypresent machine seems sufficient for the purpose, and indeed the chainitself may be said to be elastic to that extent and for that purpose. Itis quite obvious that if differentsized links are to be treated theguideway portion must be removed and a new chain and guideway appliedand the parts be then operated as before.

In the device herein illustrated I have shown the chute so shaped thatthe links are inserted therein with the open part of the lip up. Theposition of the link of course depends upon the position of the gatewhich is to be removed. The gate on some sizes of links is in suchposition that the link must be reversed when placed in the chute and theshape of the chute modified accordingly.

I claim- 1. In a machine for grinding the links of a metal belt, thecombination of a grindingwheel with a carriage adjustably fixed withrelation to the surface of the grinding-wheel, and a conveyer device onthe carriage moving across the surface of the grinding-wheel, and meansthereon for receiving and carrying the links to be ground across thesurface of the wheel.

2. A machine for grinding the links of a metal belt, having asprocket-chain, a drivin g-wheel, a device for supplying the links to beground to'the chain, which consists of a chute discharging upon thechain and a spring device above the chain and between which and thechain the links are received.

3. In a machine for grinding the links of a metal belt, the combinationof a driving counter-shaft with a frame, a driven shaft thereon,carrying the grinding-wheel, a second driven shaft thereon, a drivingsprocket-wheel, a grooved guideway thereon through which the links areconveyedwhile being ground, a carriage mounted on the frame, a secondsprocket-wheel and a chain driven by the two wheels, and adjustingdevices whereby the carriage and chain and sprocket-wheels are movedbodily toward or away from the grinding-wheel.

4. In a machine-for grinding the links of a metal belt, the combinationof a relatively fixed rotating grindin g-wheel with a sprocketchaintraveling across the face of such grindin g-Wheel, suitable guides andfeeding devices associated therewith and projecting lugs on the chain toreceive the links and shaped so as to hold them substantially parallelto the surface of the grinding-wheel, and driving mechanism for carryingthe chain and links past the surface of the wheel.

H. P. LUTTON.

Witnesses:

BERTHA C. SIMS, DONALD M. CARTER.

